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CVE-2026-15283— WPvivid Backup for MainWP <= 0.9.33 - Authenticated (Admin+) Stored Cross-Site Scripting

Quick assessment

Affected
wpvividplugins WPvivid Backup for MainWP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress WPvivid Backup for MainWP是WordPress基金会的一款WordPress备份插件。 WordPress WPvivid Backup for MainWP 0.9.33及之前版本存在跨站脚本漏洞，该漏洞源于对admin settings的输入清理和输出转义不足，可能导致存储型跨站脚本攻击，经过身份验证的具有管理员权限的攻击者能够在页面中注入任意Web脚本。

CVSS 4.4 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpvividplugins WPvivid Backup for MainWP ≤ 0.9.33 affected
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I. Basic Information for CVE-2026-15283

Vulnerability Information
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Vulnerability Title
WPvivid Backup for MainWP <= 0.9.33 - Authenticated (Admin+) Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The WPvivid Backup for MainWP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.9.33 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress WPvivid Backup for MainWP 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WPvivid Backup for MainWP是WordPress基金会的一款WordPress备份插件。 WordPress WPvivid Backup for MainWP 0.9.33及之前版本存在跨站脚本漏洞，该漏洞源于对admin settings的输入清理和输出转义不足，可能导致存储型跨站脚本攻击，经过身份验证的具有管理员权限的攻击者能够在页面中注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpvividplugins WPvivid Backup for MainWP 0 ~ 0.9.33 -

II. Public POCs for CVE-2026-15283

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III. Intelligence Information for CVE-2026-15283

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Vendor Advisories for CVE-2026-15283 (1)

IV. Related Vulnerabilities

Same product: WPvivid Backup for MainWP
Same vendor: wpvividplugins
Same weakness: CWE-79

V. Comments for CVE-2026-15283

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